Experts can study and learn from their prior mistakes. Continually doing bottom-up when we have experts is inefficient and short-sighted, no? Surely you would streamline part of the process and end up in the pre-Trump framework yet again?
Also, I'm curious why you have such a rosy picture of the bottom-up alternatives? Are you forgetting about the ivermectin overdoses? 17,000 deaths related to hydroxychloroquine? The US president suggesting people drinking bleach? It is easy to cherry pick the mistakes that science makes while overlooking the noise and misinformation that worms its way into less-informed/less-educated thinkers when non-experts are given the reins